from rest_framework import serializers
from goods.models import SPU, Brand, GoodsCategory


class SPUGoodsSerializer(serializers.ModelSerializer):
    """
    SPU表序列化器
    """
    #  一级分类id
    category1_id = serializers.IntegerField()
    #  二级分类id
    category2_id = serializers.IntegerField()
    #  三级分类id
    category3_id = serializers.IntegerField()
    #  关联的品牌id
    brand_id = serializers.IntegerField()
    #  关联的品牌，名称
    brand = serializers.StringRelatedField()

    class Meta:
        model = SPU
        exclude = ('category1','category2','category3')


class SPUBrandsSerializer(serializers.ModelSerializer):
    """
    SPU表品牌序列化器
    """
    class Meta:
        model = Brand
        fields = "__all__"


class CategorysSerializer(serializers.ModelSerializer):
    """
    spu表分类信息获取序列化器
    """
    class Meta:
        model = GoodsCategory
        fields = "__all__"